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Glossary
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RAID5
RAID 5 = Striped Set with Distributed Parity. A minimum of 3 disks is required for a complete RAID 5 configuration. Distributed parity requires all but one drive to be present to operate; drive failure requires replacement, but the array is not destroyed by a single drive failure. Upon drive failure, any subsequent reads can be calculated from the distributed parity such that the drive failure is masked from the end user. The array will only have data loss in the event of a second drive failure and is vulnerable until the data that was on the failed drive is rebuilt onto a replacement drive.